Why is Caffeine Bad for Fertility?

Why is Caffeine Bad for Fertility?

Part 1 in a 3 Part Series on the Impact of Caffeine on Reproductive Health

Why is Caffeine Bad for Fertility? Caffeine is perhaps one of the most socially accepted drugs in our society. And yes, I said a drug. I say this as caffeine is both mildly addictive and changes your body’s internal chemistry. And this can have a significant impact on your reproductive health and should you fall pregnant and cause a number of significant complications.

In this article, I’ll share with you the facts from several western medical studies and of course examine it from the Traditional Chinese Medical point of view. I’ll then give you my recommendations and tell you, truthfully, why is caffeine bad for Fertility?

Caffeine, the hidden drug

Why is Caffeine Bad for Fertility

Obviously there is caffeine in coffee, however, it is found in many other foods and beverages such as like tea, soft drinks, energy drinks, chocolate, and coffee or chocolate ice cream, chewing gum. As such we actually take in far more caffeine than we think we may, as it’s in more substances than your coffee. Additionally, it is a common ingredient in many over the counter medications. Caffeine is a stimulant; it increases heart rate, blood pressure and thus increases energy, hence why many people become dependant on it to get themselves started in the morning.

And therein lies another aspect of its drug like nature, in conjunction with its addiction comes dependency. It becomes necessary to daily function. And like any drug, quitting it will lead to withdrawal and some pretty uncomfortable symptoms such as:

headaches,

irritability,

restlessness and

nausea.

But why would you want to quit coffee and caffeine anyway? Why is Caffeine Bad for Fertility? Or is it?

Should You Quit Your Coffee? The Studies on Caffeine and its effect on Fertility…

Multiple studies have shown that a single, regular cup of coffee drastically delays conception. In fact, one US study showed that a single coffee, taken once a day decreases your chance of conception in 12 months by over 55%. That’s one cup of coffee – and you have automatically lowered your chance of conceiving this year by over half.

How can single coffee have that much impact?

The leading author on the study of caffeine and infertility is Dr. Daniel W. Cramer from Brigham and Women’s Hospital in Boston, Massachusetts (U.S.). One of his studies, published in Fertility and Sterility – October 2001, volume 76, issue 4, pages 723-729, showed that close to 500 women aged between 36-45 years and who were not pregnant, on hormone treatment or breast feeding and consumed at least 500mg of caffeine (that’s about 3 small regular coffee’s) had nearly 70% more estrogen in the early follicular phase. This was in comparison to women who were taking less than 100mg of caffeine.

Birth Rate and Iron

Another study in those undergoing in vitro fertilization (IVF) illustrated that women who take in even small amounts of caffeine (50 mg – that’s a mug of tea) were likely to have decreased live birth rates.

The western medical model isn’t exactly sure how caffeine impacts reproductive health but they theorize that is influences egg quality and egg maturation which in turn prevents fertilization. It may also restrict blood flow to the uterus which can negatively impact implantation and prevent a pregnancy taking hold.

Finally, there are increasing amounts of research that show excess caffeine can impact the body’s ability to absorb iron due to a compound called phenol. Now, this is already an issue for women, who lose iron regularly through menstruation and generally consume little red meat, leaving the body in an iron depleted state. However, caffeine further acerbates this problem and lower iron levels is a known causal factor in multiple fertility disorders particularly those that disrupt ovulation.

And the negative impact of caffeine continues into pregnancy…a subject I’ll examine closely in part 2.

However, before we get to that I want to touch on the effects of caffeine and male fertility.

Semen quality is diminished in male coffee drinkers as is sperm motility (the swimming ability of the sperm). This, while not a definitive cause of infertility certainly won’t help matters. In fact, a Mayo Clinic study demonstrated that drinking just three cups of coffee a day leads to genetic mutations in sperm that can make it harder for them to successfully penetrate an egg. Further, it also increases the risk of miscarriage and birth defects if pregnancy is successful.

Why is Caffeine Bad for Fertility?

Why is Caffeine Bad for Fertility? Essentially in varying quantities, caffeine can lead to;

A 70% increase in estrogen, linked to endometriosis and other reproductive health issues, including infertility.

Compromised iron absorption leading to reproductive and ovulation disorders including secondary infertility

Reduction in sperm motility

I’ll continue this series in Part 2; The effects of caffeine during pregnancy and in Part 3 I’ll give you my recommendations from a TCM and Western point of view along sharing with you a couple of easy to implement ideas on reducing your caffeine intake.

Bolumar, F., Olsen, J. et al. (1997). “Caffeine intake and delayed conception: a European multicenter study on infertility and subfecundity.” European Study Group on Infertility Subfecundity. American Journal of Epidemiology 145(4): 324-334.

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